sarka



April 12, 1960 A. J. SARKA FLYING CUTTER FOR STRIP MATERIAL Original Filed Dec. 9. 1954 5 Sheets-Sheet 1 I INVENTOR Albert J. Surku A ril 12, 1960 A. J. SARKA 24,807

FLYING CUTTER FOR STRIP MATERIAL Original Filed Dec. 9. 1954 5 Sheets-Sheet 2 Fig .5D.

Fig.5C.

Fig.5B.

INVENTQR Albert J. Sdrku A. J. SARKA FLYING CUTTER FOR STRIP MATERIAL Original Filed D90- 9, 1954 April 12, 1960 5 Sheets-Sheet 3 April 12, 1960 A. J. SARKA FLYING coma FOR STRIP MATERIAL Original Filed Deb. 9, 1954 5 Sheets-Sheet 4 I "ll/Ill/l/l/ll/A [III/III INVENT'OR 9 Albert J. Surko April 12, 1960 A. J. SARKA FLYING CUTTER FOR STRIP MATERIAL Original Filed Dec. 9, 1954 5 Sheets-Sheet *5 mm 3 WT mm mm A 1 mm x :1 s IQ IQ mml i 2 N01 (I w. u 3. I -1 o .0 o? a: 7% nn 5. I 5 T2 2 2 12 United States PatentO FLYING CUTTER FOR STRIP MATERIAL Albert J. Sarka, Maple Heights, Ohio, assignor to Wean Equipment Corporation, Cleveland, Ohio, a corporation of Ohio 1 Original No. 2,827,962, dated March 25, 1958, Serial No. 474,234, December 9, 1954. Applicationfor reissue July 28, 1958, Serial No. 755,826. g

17 Claims. (Cl. 83-324) This invention relates to apparatus for treating strip and the like and more particularly to apparatus for treating moving material in strip-like form without interrupting the movement of the material. For purposes of explanation and illustration the invention will be described as embodied in three forms of flying shear.

One of the great problems in high speed strip production is the treatment of the strip, e.g., to cut it into lengths, to stamp indicia upon it or to otherwise treat the strip, as it is being processed at highspeeds. Conventional methods of treating strip are unsatisfactory for treating high speed strip since the strip piles up at the treating machine, is torn or otherwise damaged or the spacing is inaccurate. Many types of so-called flying shears and like devices have heretofore been proposed for treating such moving strip, but in'every case these devices are subject to the disadvantages of complexity of design, high cost, large floor space requirements, need for highly skilled operating personnel and above all, very definitelimitations as to accuracy and operating speed.

The strip treating mechanism of this invention eliminates all of these disadvantages of the prior art equipment. The mechanism of this invention is simple in construction and design, economical of floor space and is virtually unlimited in operating speeds. It may be positively synchronized with the strip speed and is free from piling up of the strip, tearing and other damaging effects which are associated with conventional mechanisms. The

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pivoted about a fixed axis opposite the first member so that the second member is caused to reciprocate in the guide ways as the frame carrying the first member revolves about its cams.

Means may be provided for altering the fixed axis of the arms carrying the second member so thatthe axis is lowered and the second member dropped out of contact with the first member for one or a multiplicity of rotations of the cam. This means may be a rotatable eccentric cam upon which the arm pivots and means for rotating the cam to raise and lower the pivotal axis of the arm. Preferably this rotating means is a solenoid but it may be an air cylinder or similar actuating means or combination thereof.

Means may also be provided for altering the length of strip cut or treated. This may be accomplished through means for altering the speed of strip feed so as to vary the cut lengths when the invention is used as a shearing device. This means preferably takes the form of a variable speed drive such as a PIV unit between the driving means and the pinch roll drive gears. It is necessary that the velocity of the upper platen carrying frame be synchronized with the speed of the strip at the time the platens contact the strip when the strip speed is thus altered. This synchronization is accomplished by means of variable throw eccentric cams which can be adjusted to vary the circumference of the circle generated by any point on the first member carrying frame. The circumference of this circle must equal the length of material fed by the pinch rolls for one cycle of operation.

Means may also be provided for interchanging platens so that the shear may beconverted to a punch press, a stamping machine or other strip treating mechanism simply by changing-the platens. Preferably this is accomplished by providing platen holders, one fixed in the floating frame and the other pivoted on the arm and vertically reciprocable in the frame.

Certain features, objects and advantages of this invention have been described above. Other features, objects and advantages will be apparent from a consideration of the following description and the accompanying drawings in which:

Figure 1 is a side elevational view of a flying shear according to this invention;

mechanism of the invention may be used for shearing,

contour cutting, stamping or otherwise treating a rapidly moving strip. The mechanism shall, however, be specifically described in this application in connection with shearing of, metal strip.

Preferably there is provided continuously operable means feeding strip material, and the like in a path, a first member for acting on the strip and the like mounted to operate in a circular path a portion of which lies substantially in the first mentioned path, a guide extending generally transversely of the first mentioned path mounted to move with the first member, a second member for acting on the strip and the like mounted to reciprocate in the guide and move generally in the direction of the first mentioned path generally in unison with the first member and to move substantially into the first mentioned path substantially simultaneously with the first member. Preferably the first member is mounted in a floating frame surrounding the path of strip travel and mounted on spaced apart eccentric cams. These cams are identical in size and shape and rotate about parallel axes and in the same direction so that all points on the frame describe a circle of identical size during each revolution of the cams. The second member is preferably mounted in guides in the frame on the side of the strip opposite the first member and pivoted to an arm which is in turn Figure 2 is an elevation view of the discharge end of the flying shear of Figure 1;

Figure 3 is a side elevation view of the shear of Figure 1 looking from the right of Figure 2;

Figure 4 is a vertical section on the line IV-IV of Figure 2;

Figures 5A, 5B, 5C and 5D are vertical sectional views through the floating frame and illustrate diagrammatically the sequence of motion of the floating frame and platens during a single cycle;

Figure 6 is a side elevational view of a flying shear according to this invention incorporating a variable drive to the pinch rolls and a variable cam arrangement for varying the throw of the floating housing. This figure also shows a modified pinch roll tensioning mechanism;

Figure 7 is a side elevation of the shear shown in Figure 6'taken from the opposite side;

Figure 8 is a section taken along line VIIIVHI of Figure 6 and showing the variable cam arrangement in the maximum position;

Figure 9 is the same as Figure 8 except that the variable cam arrangement is in the minimum position;

Figure 10 is a sectional view taken along line XX of Figure 8;

Figures 11A, 11B and 11C are vertical sectional views through the floating frame of a shear according to this invention illustrating a miscut by lowering the pivotal axis of the lower platen arms; i

Figures 12A, 12B 12C and 12D are vertical sectional 'views of the same shear appearing in Figures 11A, 11B

and 11C but with the shear in cutting position by raising the pivotal axis ofthe lower platen arms; and

. Figures 13A and 13B are side elevational views of flying shear according to this invention embodying eccen' tric cams for the floating frame which lie in two-spaced apart vertical planes.

Referring to the drawings there is illustrated av housing having a base 11 and side members '12. A pair of parallel shafts 13 and 14 are journaled for rotation adjacent the top and bottom of the side members 12, vertically one above the other. Each of these shafts is. pro-. vided with eccentric cams 15 adjacent the side, members 12; A floating frame made up of side frames 16 mounted for rotation on the cams 15 and spacer members (not shown) is provided between the side members 12 of the housing. A top platen 17 is fixed between the side frames 16-below the upper shaft 13 and travels with these side frames. Each side frame lfiis provided with avertical A pair of pinch rolls 24 and 25 are provided adjacent the floating frame. The lower pinch roll 24 is journaled in the side members 12.1 The upper pinch roll 25 is journaled in lever arms 26 pivotally mountedjon the side members 12 above the bottom pinch roll. Tension springs 27 are connectedto the ends of these lever arms 26 to maintain pressure between the .rolls.. The lower pinch roll 24 is.driv en from a gear 28 mounted at one end thereof which gear is in turndriven by a gear 29 onthei end of theupper shaft 13. The gears 28 and 29 are matched to give a peripheral speed on the pinch roll 24 equal to the peripheral speed of the cams 15. The opposite end of the pinch roll 24 is provided with a gear 30 which drives the upper pinch roll 25 through an identical gear 31 A set of rollers 32 may be provided in the form ofa.

Inthe shear structure described above, a cut, can be made consistently to a given length. In order to permit variation in length of multiples of the basic length, a modified form of structure may be used. In this modification, the drive, the housing, the eccentric cams and the floatingframe structure remain the same. The lower platen 50 is still" reciprocable in slots 51 identical with those of Figuresl through 5. However, the lower platen 50 is pivoted on theends of arms 52 which surround the lower shaft 14 out of contact with it. The arms 52 are pivoted on eccentric earns 53 mounted on a separate shaft 54; The eccentriccam's are connected through a shaft 55 to a double acting solenoid 56 which acts to rotate them about the shaft 54 and thereby raise and lower the pivotal axis of the arms 52. By lowering the pivotal axis of the arms 52 the lower platen is caused to follow an are slightly below the pathof travel of thestrip so that its travel never intersects the path of the upper platen 57.

roller leveler in advance of the pinch rolls to level the strip and a strip guide slot 33 may be inserted between the roller leveler and pinch rolls to align the strip with the roll nip.

The operation of the flying shear described ,abovej will.

be perhaps best. explained byreference to theydiagrammatic showing of Figures 5A throughSD. The strip 34 to be sheared passesthrough the roller leveler 32 and the guide slot 33 into the pinch rolls24 and 25. The strip is then fed by the pinch rolls at a steady rate ,of speed through between the side frames 16 of the floating frame and between the upper platen 17 and lower platen 19. As the motor 21 drives the shafts 13 and 14 the eccentric cams carrythe side frames 16 of the float ing frame in a circle about the two shafts as illustrated in Figures 5A through 5D. This in turn carries the upper platen through an identical circle below the shaft 13. At the time the lower platen 19 is moved vertically reciprocably in the slot 18 and at the same time back and forth horizontally with the floating frame, thereby following an arcuate path. As the strip is fed. out of the This is illustrated in Figures 11A through 110. When the pivotal. axis of the arms 52 is raised the operation of the two platens is as described in connection with Figures 5A through 5D; This action is specifically illustrated in Figures 12A through 12D. Actuation of thesolenoid maybe made by means of an adjustable counter 62 geared into the drive and adjusted so that the solenoid can complete a stroke in'eachv direction every second, third, fourth or other desirable cycle of the machine.

In'fo'rder to permit the ready interchange of platens 50,

a lowerplaten holder 58 may be provided for reciproca tion in the slots 51 to. carry the platen 50. Also, an upper platen holder 59' may be provided to carry the platen 57. Thefplaten l'iolders58 and 59 may be provided with keyways 60'to receive a key 61 By using platen holders, various interchangeable, platens such as punches, dies,

stamps and the like may be substituted for the cutting platens and 57 as shown in the drawings.

InYthe modification shown in' Figures 11A through 11C and l2A through 12D means are provided for cutting multiplelengths of a basic length. It may be desirable, however, tovary the basic length without varying it by a multiple thereof. are provided for varying thethrow of thecams actuating the upperplaten carrier housing so that the circumference of the circle generatedby any point in the housing is equal to the length of "cut 'it is d esired'to establish. Means are also providedfoe adjustingfthe speed of the pinch rolls pinch rolls at a steady rate of speedthe upper platen 17 1 and lower platen 19 follow the positions illustratedin Figures 5A through 5D so that they momentarily intersect at SC to make a cut. Since the linear speed of the pinch rolls and the cam surface is the same, then the linear speed of the strip and the platens will be' the same and the speed of the strip relative to the speed of the.

blades will be zero at the moment of contact. Therefore, the strip can be sheared or otherwise processed by appropriate tooling mounted on the platens just as effectively' as if the operation were performed in. a stationary manner.

sojthat this same length;of"material is fed during one ,cY'clei pinfinitelyadjustable variable speed drive'70 'maybe driven by a gear 71 on the'lowershaft 72 of a flyin gf s'h'ear similar'to that of Figures 1 through 5. In the embodiment illustrated in Figures 6 and 7 the shaft 72 isthe equivalent of shaft 14: Alower pinch roll 73, corresponding to pinch roll 24, is driven by the variable speed drive 70 through gears 74 and 75; The upper pinch rol173a is drivenbyjgears 76 and 77 corresponding to gears30 and'31 of Figures 1 through 5. By varying the variable speed drive 70the amount of strip fed by the pinch rolls 73 and 73a for each cycle of the floating frame can be varied so as to make it less than the basic length of cut.

Means for varying the eccentricity of the driving cams isshown iuFigursS, 9 and 10. Annularjrings '78 correspond to the eccentric Qcams 1'5 and are fitted in the ing threads the rings 78. A worm gear is rigidly attached to the shaft 84. A worth 86 is mounted so as to cooperate with the worm gear 85. B turning the hziiid wheel 87, the worth 86 causes the worm gear 85 In order to accomplish this means to rotate thus rotating shaft 84. This rotation causes the cams 80 to slide on the sloping ways 83 thus altering the amount of eccentricity. It is only necessary that the eccentricity of the upper and lower sets of cams be equal to each other and that the circumference of the circle generated by this throw be equal to the length of material fed by the pinch rolls as determined by the adjustment of the variable speed drive 70.

In the embodiment shown in Figures 6 and 7 an alternative form of mechanism for applying pressure to the pinch rolls is shown. In this embodiment the upper pinch roll is journaled in lever arms 100 pivoted on the housing 101. An outwardly extending arm 102 fixed to the housing 101 projects above and parallel to the lever arm 100. Suspended from the arm 102 is a screw jack 103 bearing against a spring 104 in turn bearing on the free end of lever arm 100. By adjusting the position of the screw jack 103, the pressure on the lever arm 100 may be varied by varying the compression on the spring 104.

In the embodiment illustrated in Figures 13A and 13B, there is illustrated a flying shear having a pair of shafts 113 and 114 corresponding to the shafts 13 and 14 of Figures 1 through 5. These shafts 113 and 114 are journaled in two spaced apart parallel vertical planes instead of in the same vertical plane as are shafts 13 and 14 in Figures 1 through 5. Each of the shafts 113 and 114 are provided with eccentric cams 115 which carry side frames 116 of a floating frame. The side frames 116 are preferably in the form of a triangle journaled on the cams 115 adjacent to apexes. An upper platen 117 is fixed between the side frames and rotates with them. Directly beneath the upper platen 117 are guide slots 118 carrying a lower platen 119 mounted on the ends of arms 120 journaled on pins 121 located in slide blocks 12 2. The slide block 122 are mounted on longitudinal ways;123. Air cylinders 124 are connected by pins 125 to slide blocks 122. Movement of slide blocks 122 to the right by means of air cylinders 124 lowers the platen 119 out of operating position. The operation of this embodiment is precisely the same as that of the embodiment illustrated in Figures 1 through 5.

While certain preferred embodiments of this invention have been illustrated and described it will be understood that the invention may be otherwise embodied within the scope of the following claims.

I claim:

1. Apparatus for treating rapidly moving strip and the like comprising continuously operable means feeding strip and the like in a path, a first member for acting on the strip and the like mounted to operate in a circular path a portion of which lies substantially in the first mentioned path, a guide extending generally transversely of the first mentioned path mounted to move with the first member, a second member for acting on the strip and the like mounted to reciprocate in the guide and link means connecting the second member to a pivot point spaced from and independent of the first member causing the second member to reciprocate in the guide and move generally reciprocably in the direction of the first mentioned path generally in unison with the first member and to move substantially into the first mentioned path substantiallysimultaneously with the first member.

2. Apparatus for treating rapidly moving strip and the like comprising continuously operable means feeding strip or the like, a first member for acting on the strip or the like mounted to operate in a circular path a portion of which lies substantially in the first mentioned path, eccentric drive means actuating said first member to operate in said circular path, a guide extending generally transversely of the first mentioned path mounted to move with the first member, a second member for acting on the strip or the like mounted to reciprocate in the guide and link means connecting the second member to a pivot point spaced from and independent of the first member causing the second member to reciprocate in the guide and move generally reciprocably in the direction of the first mentioned path generally in unison with the first member and to move substantially into the first mentioned path substantially simultaneously with the first member.

3. Apparatus for treating rapidly moving strip and the like comprising continuously operable means feeding strip and the like, an eccentrically driven floating frame surrounding the path of travel on the exit side of the feeding means all points of which frame move in a circular path, a first member for acting on the strip or the like, said first member being on said frame on one side of the path of strip travel and adapted to pass on the first mentioned path during a portion of its movement with the frame, a second member for acting on the strip reciprocably movable in said frame. transverse to the path of travel of the strip and link means connecting the second member to a pivot point spaced from and independent of the first member causing the second member to reciprocate in the frame and move generally reciprocably in the direction of the first mentioned path generally in unison with the first member and to move substantially into the first mentioned path substantially simultaneously with the first member.

4. Apparatus for treating moving strip or the like comprising continuously operable means feeding strip or the like in a path, an eccentrically driven floating frame surrounding the path of strip travel on the-exit end of the feeding means all points of which frame move in a circle 4 whose radius equals the throw of the eccentrics, a first member on said frame on one side of the path of strip travel, guideways on the floating frame spaced from the first member on the opposite side of the first mentioned path and transverse thereto, a second member reciprocally movable in said guideways, a pair of spaced armspivoted on the second member and on an axis spaced from and independent of the first member on the opposite side of the guideways whereby the second member reciprocably follows a path generally parallel to the path of strip travel, and drive means driving the strip feed means and the floating frame in unison.

5. Apparatus for treating rapidly moving strip and the like as claimed in claim 4 wherein the arms are pivotally mounted on eccentric cams and means are provided for rotating said eccentric cams within the arms to way their pivotal axis whereby the second member is moved into and out of position to intersect the path of strip travel.

6. Apparatus for treating rapidly moving strip and the like comprising means for continuously feeding the strip material in a path, a floating frame surrounding the path of strip travel on the exit side of the feeding means, rotary eccentric means causing the top and bottom of the frame to move in identical spaced apart circles on opposite sides of the path of strip travel, drive means simultaneously driving the feeding means and the eccentric means, a first member fixed on the frame adjacent the path of strip travel to operate in a circular path a portion of which lies substantially in the first mentioned path, a second member movable reciprocably in guides in the frame on the opposite side of the path of strip travel from the first member and transverse to the path of strip travel and connecting means holding the second member spaced from and independent of the eccentric means, said connecting means causing the second member to move in the guide means generally in the direction of the first mentioned path as the frame rotates to bring the strip between the first and second members.

7. Apparatus for treating rapidly moving strip and the like comprising means for continuously feeding the strip material in a path, a floating frame surrounding the path of strip travel on the exit side of the feeding means, spaced rotary cam means acting on the frame to cause it to move in a circle whose radius is the length of throw of fthe eccentric, drive means simultaneously driving the feeding means and the'-' cam-me ans,* afirst 'mem I bet fixedfto "saidf rameon oneside ofthe path 'o ffstrip travel; guide'nreans" on the frame, on the side opposite the path of strip irsverrronmhe first-member and tran's verse to the path of strip travel, a second member' movable in said guide means? conneeting means "holding the secondfmemher spacedadjacent the-path of strip travel wherebythe 'second member reciprocably follows a path generally parallel to the path of strip travel," saidconnectin'g'rneansbeing pivoted onsecondeccentric cam means spaced from 'th'e path ofstriptravel and means for rotatmg said second eccentric carns withinthe connecting means to vary thepivotal'axis of the connecting means whereby the second member is moved into and out of position tointersectthe path'of strip travel.-

8; Apparatus for treating rapidly moving strip and the like comprising" continuously operable 'meansfeeding strip and the like inapath'; means'varying the speed of said feedingmeans, a first member'for acting on the strip and the like mounted to operate'in a circular path, a portion of which lies substantially in the first mentioned path, meansvarying the radius of said circular path whereby to maintain the circumferential speed of the member at substantially the linear speedof the strip, a guide extending generally transversely of the first mentioned path mounted to move with the first member, a second member for acting on the strip and the like mounted to reciprocate in the guide and link means connecting the second member toapivot point spaced from andindependent'o'f the first'member causing the second member to reciprocate in'the guide andmo've generally reciprocably inthedirection'of, the first mentioned path generally'in nnisoriwiththe first member and to move substantially into the first mentioned path substantially simultaneously with the first member.

9. Apparatus for treating rapidly moving strip and the like comprising means for feeding strip material, an eccentrically driven floating frame surrounding the path of strip travel on the exit side of the feeder means all points of which frame move in a circle, a first member on the frame on one side of the path of strip travel, a second member for acting on the strip reciprocably movable in said frame transverse to the path of the strip, link means connecting the second member to a pivot point spaced from and independent of the first member causing the second member to reciprocate and move generally reciprocably in the direction of the path of strip travel simultaneously with the first member, drive means driving the eccentrically driven floating frame, means varying the radius of the frame circle to vary the crrcumferential speed of the frame and variable drive means connecting said first drive means with the feeding means whereby variations in the speed of the frame may be matched with the speed of feed.

10. Apparatus for treating rapidly moving strip and the like comprising meansfor feeding strip material, an eccentrically driven floating frame surrounding the path of travel'on the exit side of the feeder and mounted to operate in a circular path, means for varying the eccentricity of the-floating frame drive, a first member on the frame" onone side of the path of strip travel, a second member for acting on the strip reciprocably movable in said frame transverse to the path of the strip, link means connecting the second member to a pivot point spaced from and independent of'the first member causing the second memberto reciprocate and move generally reciprocably in the path of strip travel simultaneously with the first member, driveme'ans driving the strip feed means and theeccentric drive at a' constant relative rate of'linear'speed. I

11. Apparatus for trea'tingrrapidly moving strip and the like comprising means for continuously feeding the strip material, a floating frame surrounding thep'ath of strip" travel" ou thexit side of the feeding means,- variable throw eccentric-earn means rotating the fioating frame-so' that all points thereon describe a" circle whose radius isthe leiigtlz't"of thr'ow of theeccent-ric drive, var-i following a path of travel, a first member for acting on able drive means simultaneously driving thei feedin'g means and the eccentric cam means at equal linear speeds, a-'first member 'fixedon' the frame adjacent the path of strip travel, a second member: movable in guides in the frame on the oppositeside of the path of-strip* 'travel and transversely thereto" andconnecting means holding the second member spaced from and independent of the eccentric cam means, said connecting means caus ing the second member to move in the guide means'as the frame rotates generally'reciprocably in-the'directio'n" of strip travel whereby to bring the strip between the first and secondmembers.

12. Apparatus for treating-'ir'apidly moving strip and the like comprising continuously operable means feed ing strip and the hitch a path, a first member for act--- ing on the strip and the like mounted'to operatein a* circular path a portion of which lies substantially in the first mentioned path, a guide extending generally transversely of the first mentioned path mounted to move with the first member,-a second member for acting on the strip mounted to reciprocate in the guide and move generally reciprocably in the direction of the first mentioned path in unison with the first member, removable treating means on the first andsecond members, and lockingmeans holding said treating means on said members.

13. In an apparatus for treating rapidly moving strip following a path of travel, a'first member for acting on the strip andthe like mounted to operate in a circular path'a portion of which lies substantially in the path'of strip travel, a guide extendinggenerally transverselyofthe path of striptravel to move with the first member, a second member for acting on the strip and the like mounted to reciprocate in the guide and link means connecting the second member to a pivot point spaced from and independent of the first member causing the} second member to reciprocate in the guide and move generally reciprocably in unison with the first member generally in the direction of strip travel substantially simultaneously with the first member.

14. In an apparatus for treating rapidly moving strip the strip and the like mounted to operate in a circular path, a portion of which lies substantially in the path of strip travel, a guide extending generally transversely of the path of'strip travel-to move with the first member, a second member for acting on the strip and the like mounted to reciprocate in the guide, link means connecting the second member to a pivot point spaced from and independent of the first member causing the second member to' reciprocate in the guide and move generally in unison with the first member generally reciprocably in the direction of strip travel substantially simultaneously with the first member and cam means carrying the pivot point spaced from the path of strip travel and means selectively changing the cam means to move the pivot point toward and away from the path of the strip travel whereby the distance between the said first and second members is selectively varied to control the intersection of the second member with the path of strip travel.

15. In an appa'ratus" for treating rapidly moving strip following a path of travel, a first member for acting on the strip and the like mounted to operate in a circular path a portion of which lies" substantially in the path of strip travel, means for varying the radius of said circular path, a guide extending generally transversely of the path of strip travel to move with the first member, a second member for acting on' the strip and thelike mounted to reciprocate in the guide and link means connecting' the'second member to a pivot point spaced from and independent of the" first member causing the second member to reciprocate in theguide and move" generally' reciprocably in unison with the first member gem orally in the direction of strip travel substantially simultaneously with the first member.

16. In an apparatus for treating rapidly moving strip following a path of travel, a first member for acting on the strip and the like mounted to operate in a circular path, a p rtion of which lies substantially in the path of strip travel, a guide extending generally transversely of the path f strip travel to move with the first member, a second member for acting on the strip and the like mounted to reciprocate in the guide, link means connecting the second member to a pivot point spaced from and independent of the first member causing the second member to reciprocate in the guide and move generally in unison with the first member generally reciprocably in the direction of strip travel substantially simultaneodsly with the first member, means carrying the pivot point spaced from the path of strip travel and means acting on the pivot carrying means selectively changing the position of said pivot carrying means to move the second member toward and away from the path of strip travel whereby the distance between the said first and second members is selectively varied to control the intersection of the second member with the path of strip travel.

17. In an apparatus for treating rapidly moving strip following a path of travel, a first member for acting on the strip and the like mounted to operate in a circular path, a portion of which lies substantially in the path of strip travel, a guide extending generally transversely of the path of strip travel to move with the first member, a second member for acting on the strip and the like mounted to reciprocate in the guide, link means connecting the second member to a pivot point spaced from and independent of the first member causing the second member to reciprocate in the guide and move generally in unison with the first member generally reciprocably in the direction of strip travel substantially simultaneously with the first member, means carrying the pivot point spaced from the path of strip travel and means acting on the pivot carrying means selectively changing said pivot carrying means from a first position in which the second member intersects the path of strip travel to a second position in which the second member is held out of the path of strip travel.

References Cited in the file of this patent or the original patent UNITED STATES PATENTS 846,362. Swift Mar. 5, 1907 1,601,128 McFarland Sept. 28, 1926 1,807,499 Trump May 26, 1931 1,814,513 Johnson July 14, 1931 1,831,167 Gangler Nov. 10, 1931 1,939,140 Schreck Dec. 12, 1933 2,032,098 Roberts Feb. 25, 1936 2,112,850 Klinger Apr. 5, 1938 2,136,210 Hall NOV. 8, 1938 2,261,007 Talbot Oct. 28, 1941 2,368,152 McWilliams Jan. 30, 1945 2,640,539 Piper June 2, 1953 2,734,570 Hallden Feb. 14, 1956 FOREIGN PATENTS 348,900 Great Britain May 21, 1951 

